[eluser]steelaz[/eluser]
You need to add your css and javascript directories to ignore list, so for example if you store your css in example.com/assets/css/ directory, you should:
Code:
RewriteEngine on
RewriteCond $1 !^(index\.php|images|assets|robots\.txt)
RewriteRule ^(.*)$ /index.php/$1 [L]